Resembling no. 1 [Carphephorus tomentosus (Michx.) Torr. & A. Gray], but glabrous or subglabrous below the puberulent and often more ample infl; invol bracts ca 15-30, merely ciliate- margined, not especially thick, broadly rounded above; achenes 4-6 mm; 2n=20. Sandy soil, especially in pine-barrens; se. Va. to Ga. Aug.-Oct.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.